thanks for ur query ur d-dimer is high that does not surely indicate that again u have pulmonary embolism u must need to have a pulmonary CT angiogram for confirming it if positive result is found then should have a bunch of investigation for this recurrent events ur pr c level is low that may be due to anticoagulant intake but u should have a factor 5 assay along with its activity because factor 5 leiden mutation may lead to low pr c and these recurrent pulmonary embolism also u need to have both lower limb USG doppler study to look for any thrombi for mr tr purposes consult cardiologist i dont think that mr tr is not causing these problems to u consult a pulmonologist thank u